LUCL9215AAU-D AGERE [Agere Systems], LUCL9215AAU-D Datasheet - Page 13

• Manufacturer Part Number: LUCL9215AAU-D
• Description: Short-Loop Sine Wave Ringing SLIC
• Manufacturer: AGERE [Agere Systems]

September 2001
State Definitions
On-Hook Transmission with PPM
Battery
On-Hook Transmission
On-Hook Transmission with PPM
Battery
Agere Systems Inc.
Pin PT is positive with respect to PR.
V
Supervision circuits, loop closure, and common-
mode detect are active.
Ring trip detector is turned off to conserve power.
On-hook transmission is allowed.
The tip-to-ring on-hook differential voltage will be
between –41 V and –49 V with a –70 V primary bat-
tery.
PPM is on.
Pin PR is positive with respect to PT.
V
Supervision circuits, loop closure, and common-
mode detect are active.
Ring trip detector is turned off to conserve power.
On-hook transmission is allowed.
The tip-to-ring on-hook differential voltage will be
between –41 V and –49 V with a –70 V primary bat-
tery.
PPM is off.
Pin PR is positive with respect to PT.
V
Supervision circuits, loop closure, and common-
mode detect are active.
BAT1
BAT1
BAT1
is applied to tip/ring drive amplifiers.
is applied to tip/ring drive amplifiers.
is applied to tip/ring drive amplifiers.
(continued)
—
Reverse Battery
—
—
Forward
Reverse
Disconnect
Ring
Thermal Shutdown
Ring trip detector is turned off to conserve power.
On-hook transmission is allowed.
The tip-to-ring on-hook differential voltage will be
between –41 V and –49 V with a –70 V primary bat-
tery.
PPM is on.
The tip/ring amplifiers and all supervision are turned
off.
The SLIC goes into a high-impedance state.
NSTAT is forced high (on-hook).
Power ring signal is applied to tip and ring.
Input waveform at RING
Ring trip supervision and common-mode current
supervision are active; loop closure is inactive.
Overhead voltage is reduced to typically 4 V, regard-
less of programming on OVH, and current limit set at
V
Current is limited by saturation current of the amplifi-
ers themselves, typically 100 mA at 125 °C.
Not controlled via truth table inputs.
NSTAT is forced low (off-hook) during this state
This mode is caused by excessive heating of the
device, such as may be encountered in an extended
power cross situation.
PROG
Short-Loop Sine Wave Ringing SLIC
is disabled.
IN
is amplified.
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